ScienceDaily: Most Popular News

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• Ancient African cattle first domesticated in Middle East, study reveals
• Revolutionary solar cells double as lasers
• Hubble sees Mars-bound comet sprout multiple jets
• Engineered bacteria produce biofuel alternative for high-energy rocket fuel
• Last drinks: Brain's mechanism knows when to stop
• Goats are far more clever than previously thought, and have an excellent memory
• Blue-eyed Humans Have A Single, Common Ancestor

Ancient African cattle first domesticated in Middle East, study reveals Posted: 28 Mar 2014 09:10 AM PDT The genetic history of 134 cattle breeds from around the world has been completed by a group of researchers. In the process of completing this history, they found that ancient domesticated African cattle originated in the 'Fertile Crescent,' a region that covered modern day Iraq, Jordan, Syria and Israel.

Revolutionary solar cells double as lasers Posted: 28 Mar 2014 05:55 AM PDT Latest research finds that the trailblazing 'perovskite' material used in solar cells can double up as a laser, strongly suggesting the astonishing efficiency levels already achieved in these cells is only part of the journey.

Hubble sees Mars-bound comet sprout multiple jets Posted: 27 Mar 2014 08:15 AM PDT A new image of a comet at 353 million miles from Earth shows two jets of dust coming off the comet's nucleus in opposite directions.

Engineered bacteria produce biofuel alternative for high-energy rocket fuel Posted: 26 Mar 2014 01:09 PM PDT Researchers have engineered a bacterium to synthesize pinene, a hydrocarbon produced by trees that could potentially replace high-energy fuels, such as JP-10, in missiles and other aerospace applications. By inserting enzymes from trees into the bacterium scientists have boosted pinene production six-fold over earlier bioengineering efforts.

Last drinks: Brain's mechanism knows when to stop Posted: 26 Mar 2014 07:27 AM PDT Our brains are hardwired to stop us drinking more water than is healthy, according to a new brain imaging study. The study found a 'stop mechanism' that determined brain signals telling the individual to stop drinking water when no longer thirsty, and the brain effects of drinking more water than required.

Goats are far more clever than previously thought, and have an excellent memory Posted: 26 Mar 2014 06:26 AM PDT Goats learn how to solve complicated tasks quickly and can recall how to perform them for at least 10 months, which might explain their remarkable ability to adapt to harsh environments, say researchers. The goats' ability to remember the task was tested after one month and again at 10 months. They learned the task within 12 trials and took less than two minutes to remember the challenge.

Blue-eyed Humans Have A Single, Common Ancestor Posted: 30 Jan 2008 02:03 PM PST New research shows that people with blue eyes have a single, common ancestor. Scientists have tracked down a genetic mutation which took place 6,000-10,000 years ago and is the cause of the eye color of all blue-eyed humans alive on the planet today.

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